Chemical carbon remover



Patented Mar. 22, 1932 WILLIAM H. JOHNSEN, 01? DALLAS, TEXAS CHEMICAL CARBON REMOVED No Drawing.

' jected throughthe spark plug openings of I the engine.

When the composition of this invention is introduced in either of the manners above suggested, the engine may be run for a few seconds to bring the composition in contact with the carbon deposits, whereupon the engine is shut OE and allowed to remain idle for a certain period. During this time, the composition will soften the carbon formed on the engine parts so that, as soon as the engine is again started, the loosened particles of carbon will be discharged through the exhaust.

It has been found that a suitable mixture embodying this invention may be made with various ingredients added in quantities, substantially as follows:

' Per cent Isopropyl-ether 20' Acetone 20 Propylene-di'-.chloride.. 20 Ethylene-di-chloride 20 Chlorinated naphthalene 20 It is to be understood that the composition may be varied by changing the proportions or by eliminating one or more of the specified ingredients. For example, it has been found that a satisfactory carbon-removing composition may be made by leaving out either the ethylene-di-chloride or the propylene-di-chloride and increasing the proportions of the remaining chemicals.

By way of an example of one method of carrying out this invention, it has been found Application filed July 3, 1980. Serial No. 465,791.

that, for one cleaning operation, approximately six fluid ounces of the composition are suflicient to remove the usual carbon deposits, but it will be understood that a larger quantitymay be employed without injuring in any way the metal parts or interfering with the operation of the engine.

What isclaimed is:

1. A composition of matter for removing carbon deposits from internal combustion engines, comprising substantially equal proportions of isopropyl-ether, acetone, propylenedichloride, ethylene-dichloride and chlorinated naphthalene.

2. A composition of matter for removing carbon deposits from internal combustion engines, comprising substantially equal proportions of isopropyl-ether, acetone, propylene-dichloride and chlorinated naphthalene.

3. A composition of matter for removing carbon deposits from internal combustion engines, comprising substantially equal proportions of isopropyl ether, acetone, ethylene-dichloride and chlorinated naphthalene.

WILLIAM H. JOHNSEN. 

